<!--
 * @Author: MN
 * @Date: 2023-08-22 18:05:51
 * @LastEditTime: 2023-08-30 11:11:16
 * @LastEditors: MN
 * @Description: ''
 * @FilePath: \vue2-element-admin-simple-diy\src\views\home\index.vue
-->
<template>
  <div>
    <el-tree
      :data="data"
      show-checkbox
      node-key="id"
      :default-expanded-keys="[2, 3]"
      :default-checked-keys="[5]"
      :props="defaultProps"
       ref="tree"
    >
    </el-tree>
  </div>
</template>

<script>
export default {
  data () {
    return {
      data: [
        {
          id: 1,
          label: '一级 1',
          children: [
            {
              id: 4,
              label: '二级 1-1',
              children: [
                {
                  id: 9,
                  label: '三级 1-1-1'
                },
                {
                  id: 10,
                  label: '三级 1-1-2'
                }
              ]
            }
          ]
        },
        {
          id: 2,
          label: '一级 2',
          children: [
            {
              id: 5,
              label: '二级 2-1'
            },
            {
              id: 6,
              label: '二级 2-2'
            }
          ]
        },
        {
          id: 3,
          label: '一级 3',
          children: [
            {
              id: 7,
              label: '二级 3-1'
            },
            {
              id: 8,
              label: '二级 3-2'
            }
          ]
        }
      ],
      defaultProps: {
        children: 'children',
        label: 'label'
      }
    }
  },
  created () {
    this.$nextTick(() => {
      const checkedNodes = this.$refs.tree.getCheckedNodes()
      console.log(checkedNodes)
    })
  },
  methods: {

  }
}
</script>

<style lang="scss" scoped>
</style>
